- 16 Jun, 2016 2 commits
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Ying Xue authored
net/tipc/link.c: In function ‘tipc_link_timeout’: net/tipc/link.c:744:28: warning: ‘mtyp’ may be used uninitialized in this function [-Wuninitialized] Fixes: 42b18f60 ("tipc: refactor function tipc_link_timeout()") Acked-by:
Jon Maloy <jon.maloy@ericsson.com> Signed-off-by:
Ying Xue <ying.xue@windriver.com> Signed-off-by:
David S. Miller <davem@davemloft.net>
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Ying Xue authored
When run tipcTS&tipcTC test suite, the following complaint appears: [ 56.926168] =============================== [ 56.926169] [ INFO: suspicious RCU usage. ] [ 56.926171] 4.7.0-rc1+ #160 Not tainted [ 56.926173] ------------------------------- [ 56.926174] net/tipc/bearer.c:408 suspicious rcu_dereference_protected() usage! [ 56.926175] [ 56.926175] other info that might help us debug this: [ 56.926175] [ 56.926177] [ 56.926177] rcu_scheduler_active = 1, debug_locks = 1 [ 56.926179] 3 locks held by swapper/4/0: [ 56.926180] #0: (((&req->timer))){+.-...}, at: [<ffffffff810e79b5>] call_timer_fn+0x5/0x340 [ 56.926203] #1: (&(&req->lock)->rlock){+.-...}, at: [<ffffffffa000c29b>] disc_timeout+0x1b/0xd0 [tipc] [ 56.926212] #2: (rcu_read_lock){......}, at: [<ffffffffa00055e0>] tipc_bearer_xmit_skb+0xb0/0x2e0 [tipc] [ 56.926218] [ 56.926218] stack backtrace: [ 56.926221] CPU: 4 PID: 0 Comm: swapper/4 Not tainted 4.7.0-rc1+ #160 [ 56.926222] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2007 [ 56.926224] 0000000000000000 ffff880016803d28 ffffffff813c4423 ffff8800154252c0 [ 56.926227] 0000000000000001 ffff880016803d58 ffffffff810b7512 ffff8800124d8120 [ 56.926230] ffff880013f8a160 ffff8800132b5ccc ffff8800124d8120 ffff880016803d88 [ 56.926234] Call Trace: [ 56.926235] <IRQ> [<ffffffff813c4423>] dump_stack+0x67/0x94 [ 56.926250] [<ffffffff810b7512>] lockdep_rcu_suspicious+0xe2/0x120 [ 56.926256] [<ffffffffa00051f1>] tipc_l2_send_msg+0x131/0x1c0 [tipc] [ 56.926261] [<ffffffffa000567c>] tipc_bearer_xmit_skb+0x14c/0x2e0 [tipc] [ 56.926266] [<ffffffffa00055e0>] ? tipc_bearer_xmit_skb+0xb0/0x2e0 [tipc] [ 56.926273] [<ffffffffa000c280>] ? tipc_disc_init_msg+0x1f0/0x1f0 [tipc] [ 56.926278] [<ffffffffa000c280>] ? tipc_disc_init_msg+0x1f0/0x1f0 [tipc] [ 56.926283] [<ffffffffa000c2d6>] disc_timeout+0x56/0xd0 [tipc] [ 56.926288] [<ffffffff810e7a68>] call_timer_fn+0xb8/0x340 [ 56.926291] [<ffffffff810e79b5>] ? call_timer_fn+0x5/0x340 [ 56.926296] [<ffffffffa000c280>] ? tipc_disc_init_msg+0x1f0/0x1f0 [tipc] [ 56.926300] [<ffffffff810e8f4a>] run_timer_softirq+0x23a/0x390 [ 56.926306] [<ffffffff810f89ff>] ? clockevents_program_event+0x7f/0x130 [ 56.926316] [<ffffffff819727c3>] __do_softirq+0xc3/0x4a2 [ 56.926323] [<ffffffff8106ba5a>] irq_exit+0x8a/0xb0 [ 56.926327] [<ffffffff81972456>] smp_apic_timer_interrupt+0x46/0x60 [ 56.926331] [<ffffffff81970a49>] apic_timer_interrupt+0x89/0x90 [ 56.926333] <EOI> [<ffffffff81027fda>] ? default_idle+0x2a/0x1a0 [ 56.926340] [<ffffffff81027fd8>] ? default_idle+0x28/0x1a0 [ 56.926342] [<ffffffff810289cf>] arch_cpu_idle+0xf/0x20 [ 56.926345] [<ffffffff810adf0f>] default_idle_call+0x2f/0x50 [ 56.926347] [<ffffffff810ae145>] cpu_startup_entry+0x215/0x3e0 [ 56.926353] [<ffffffff81040ad9>] start_secondary+0xf9/0x100 The warning appears as rtnl_dereference() is wrongly used in tipc_l2_send_msg() under RCU read lock protection. Instead the proper usage should be that rcu_dereference_rtnl() is called here. Fixes: 5b7066c3 ("tipc: stricter filtering of packets in bearer layer") Acked-by:
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- 15 Jun, 2016 14 commits
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David S. Miller authored
Sabrina Dubroca says: ==================== macsec fixes Patch 1 adds rcu_barrier() during module unload to prevent possible panics. Patch 2 allocates memory for scattergather lists and the IV on the heap, since they can escape the current function's context during crypto callbacks. Patch 3 fixes a failure to create secure associations. ==================== Signed-off-by: -
Sabrina Dubroca authored
The ASYNC flag prevents initialization on some physical machines. Fixes: c09440f7 ("macsec: introduce IEEE 802.1AE driver") Signed-off-by:
Sabrina Dubroca <sd@queasysnail.net> Signed-off-by:
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Sabrina Dubroca authored
For the crypto callbacks to work properly, we cannot have sg and iv on the stack. Use kmalloc instead, with a single allocation for aead_request + scatterlist + iv. Fixes: c09440f7 ("macsec: introduce IEEE 802.1AE driver") Signed-off-by:
Hannes Frederic Sowa <hannes@stressinduktion.org> Signed-off-by:
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Sabrina Dubroca authored
Without this, the various uses of call_rcu could cause a kernel panic. Fixes: c09440f7 ("macsec: introduce IEEE 802.1AE driver") Signed-off-by:
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Florian Westphal authored
saw a debug splat: net/include/net/sch_generic.h:287 suspicious rcu_dereference_check() usage! other info that might help us debug this: rcu_scheduler_active = 1, debug_locks = 0 2 locks held by kworker/2:1/710: #0: ("events"){.+.+.+}, at: [<ffffffff8106ca1d>] #1: ((&q->work)){+.+...}, at: [<ffffffff8106ca1d>] process_one_work+0x14d/0x690 Workqueue: events htb_work_func Call Trace: [<ffffffff812dc763>] dump_stack+0x85/0xc2 [<ffffffff8109fee7>] lockdep_rcu_suspicious+0xe7/0x120 [<ffffffff814ced47>] htb_work_func+0x67/0x70 Signed-off-by:Florian Westphal <fw@strlen.de> Acked-by:
Cong Wang <xiyou.wangcong@gmail.com> Signed-off-by:
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Jamal Hadi Salim authored
This refers to commands to direct action access as follows: sudo tc actions add action drop index 12 sudo tc actions add action pipe index 10 And then dumping them like so: sudo tc actions ls action gact iproute2 worked because it depended on absence of TCA_ACT_TAB TLV as end of message. This fix has been tested with iproute2 and is backward compatible. Signed-off-by:
Jamal Hadi Salim <jhs@mojatatu.com> Acked-by:
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WANG Cong authored
And avoid calling tcf_hash_check() twice. Fixes: a57f19d3 ("net sched: ipt action fix late binding") Cc: Jamal Hadi Salim <jhs@mojatatu.com> Signed-off-by:
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Eric Dumazet authored
Now prio_init() can return -ENOMEM, it also has to make sure any allocated qdiscs are freed, since the caller (qdisc_create()) wont call ->destroy() handler for us. More generally, we want a transactional behavior for "tc qdisc change ...", so prio_tune() should not make modifications if any error is returned. It means that we must validate parameters and allocate missing qdisc(s) before taking root qdisc lock exactly once, to not leave the prio qdisc in an intermediate state. Fixes: cbdf4511 ("net_sched: prio: properly report out of memory errors") Signed-off-by:
Eric Dumazet <edumazet@google.com> Reported-by:
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Eric Dumazet authored
Maciej Żenczykowski reported lockdep warning a spinlock was not registered before being held in mlx4_cmd_wake_completions() cmd.context_lock initialization is not at the right place. 1) mlx4_cmd_use_events() can be called multiple times. Calling spin_lock_init() on a live spinlock can lead to hangs. 2) mlx4_cmd_wake_completions() can be called while lock has not been initialized. Lockdep complains, and current logic is not race prone. It seems better to move the initialization earlier in mlx4_load_one() Signed-off-by:
Maciej Żenczykowski <maze@google.com> Cc: Eugenia Emantayev <eugenia@mellanox.com> Cc: Tariq Toukan <tariqt@mellanox.com> Signed-off-by:
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David S. Miller authored
Nicolas Dichtel says: ==================== ovs: fix rtnl notifications on interface deletion There was no rtnl notifications for interfaces (gre, vxlan, geneve) created by ovs. This problem is fixed by adjusting the creation path. v1 -> v2: - add patch #1 and #4 - rework error handling in patch #2 ==================== Acked-by:
Pravin B Shelar <pshelar@ovn.org> Signed-off-by:
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Nicolas Dichtel authored
The function geneve_dev_create_fb() (only used by ovs) never calls rtnl_configure_link(). The consequence is that dev->rtnl_link_state is never set to RTNL_LINK_INITIALIZED. During the deletion phase, the function rollback_registered_many() sends a RTM_DELLINK only if dev->rtnl_link_state is set to RTNL_LINK_INITIALIZED. Fixes: e305ac6c ("geneve: Add support to collect tunnel metadata.") CC: Pravin B Shelar <pshelar@nicira.com> CC: Jesse Gross <jesse@nicira.com> CC: Thomas Graf <tgraf@suug.ch> Signed-off-by:
Nicolas Dichtel <nicolas.dichtel@6wind.com> Signed-off-by:
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Nicolas Dichtel authored
The function gretap_fb_dev_create() (only used by ovs) never calls rtnl_configure_link(). The consequence is that dev->rtnl_link_state is never set to RTNL_LINK_INITIALIZED. During the deletion phase, the function rollback_registered_many() sends a RTM_DELLINK only if dev->rtnl_link_state is set to RTNL_LINK_INITIALIZED. Fixes: b2acd1dc ("openvswitch: Use regular GRE net_device instead of vport") CC: Thomas Graf <tgraf@suug.ch> CC: Pravin B Shelar <pshelar@nicira.com> Signed-off-by:
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Nicolas Dichtel authored
The function vxlan_dev_create() (only used by ovs) never calls rtnl_configure_link(). The consequence is that dev->rtnl_link_state is never set to RTNL_LINK_INITIALIZED. During the deletion phase, the function rollback_registered_many() sends a RTM_DELLINK only if dev->rtnl_link_state is set to RTNL_LINK_INITIALIZED. Note that the function vxlan_dev_create() is moved after the rtnl stuff so that vxlan_dellink() can be called in this function. Fixes: dcc38c03 ("openvswitch: Re-add CONFIG_OPENVSWITCH_VXLAN") CC: Thomas Graf <tgraf@suug.ch> CC: Pravin B Shelar <pshelar@nicira.com> Signed-off-by:
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Nicolas Dichtel authored
After ipgre_newlink()/geneve_configure() call, the netdev is registered. Fixes: 7e059158 ("vxlan, gre, geneve: Set a large MTU on ovs-created tunnel devices") CC: David Wragg <david@weave.works> Signed-off-by:
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- 14 Jun, 2016 8 commits
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Su, Xuemin authored
There is a corner case in which udp packets belonging to a same flow are hashed to different socket when hslot->count changes from 10 to 11: 1) When hslot->count <= 10, __udp_lib_lookup() searches udp_table->hash, and always passes 'daddr' to udp_ehashfn(). 2) When hslot->count > 10, __udp_lib_lookup() searches udp_table->hash2, but may pass 'INADDR_ANY' to udp_ehashfn() if the sockets are bound to INADDR_ANY instead of some specific addr. That means when hslot->count changes from 10 to 11, the hash calculated by udp_ehashfn() is also changed, and the udp packets belonging to a same flow will be hashed to different socket. This is easily reproduced: 1) Create 10 udp sockets and bind all of them to 0.0.0.0:40000. 2) From the same host send udp packets to 127.0.0.1:40000, record the socket index which receives the packets. 3) Create 1 more udp socket and bind it to 0.0.0.0:44096. The number 44096 is 40000 + UDP_HASH_SIZE(4096), this makes the new socket put into the same hslot as the aformentioned 10 sockets, and makes the hslot->count change from 10 to 11. 4) From the same host send udp packets to 127.0.0.1:40000, and the socket index which receives the packets will be different from the one received in step 2. This should not happen as the socket bound to 0.0.0.0:44096 should not change the behavior of the sockets bound to 0.0.0.0:40000. It's the same case for IPv6, and this patch also fixes that. Signed-off-by:
Su, Xuemin <suxm@chinanetcenter.com> Signed-off-by:
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Eric Dumazet authored
When the qdisc is full, we drop a packet at the head of the queue, queue the current skb and return NET_XMIT_CN Now we track backlog on upper qdiscs, we need to call qdisc_tree_reduce_backlog(), even if the qlen did not change. Fixes: 2ccccf5f ("net_sched: update hierarchical backlog too") Signed-off-by:
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Feng Tang authored
Commit 26c5f03b uses a new skb allocator to avoid the RFD overflow issue. But from debugging without datasheet, we found the error always happen when the DMA RX address is set to 0x....fc0, which is very likely to be a HW/silicon problem. So one idea is instead of adding a new allocator, why not just hitting the right target by avaiding the error-prone DMA address? This patch will actually * Remove the commit 26c5f03b * Apply rx skb with 64 bytes longer space, and if the allocated skb has a 0x...fc0 address, it will use skb_resever(skb, 64) to advance the address, so that the RX overflow can be avoided. In theory this method should also apply to atl1c driver, which I can't find anyone who can help to test on real devices. Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=70761Signed-off-by:
Feng Tang <feng.tang@intel.com> Suggested-by:
Ole Lukoie <olelukoie@mail.ru> Acked-by:
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Hannes Frederic Sowa authored
Reported-by:
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Hannes Frederic Sowa authored
Cc: Tom Herbert <tom@herbertland.com> Fixes: 4068579e ("net: Implmement RFC 6936 (zero RX csums for UDP/IPv6") Signed-off-by:
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Hannes Frederic Sowa authored
Cc: Florent Fourcot <florent.fourcot@enst-bretagne.fr> Fixes: 1d13a96c ("ipv6: tcp: fix flowlabel value in ACK messages send from TIME_WAIT") Signed-off-by:
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Hannes Frederic Sowa authored
IPv6 ping socket error handler doesn't correctly convert the new 32 bit mtu to host endianness before using. Cc: Lorenzo Colitti <lorenzo@google.com> Fixes: 6d0bfe22 ("net: ipv6: Add IPv6 support to the ping socket.") Signed-off-by:
Lorenzo Colitti <lorenzo@google.com> Signed-off-by:
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Clemens Gruber authored
Configuring the PHY LED registers for the Marvell 88E1510 and others is not possible, because regardless of the values in marvell,reg-init, it is later overridden in m88e1121_config_aneg with a non-standard default. This patch moves that default configuration to .config_init to allow setting the LED configuration through marvell,reg-init in the device tree, which should override said default if it exists. Signed-off-by:
Clemens Gruber <clemens.gruber@pqgruber.com> Reviewed-by:
Andrew Lunn <andrew@lunn.ch> Signed-off-by:
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- 13 Jun, 2016 2 commits
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Ivan Khoronzhuk authored
There is no reason to destroy channels that are destroyed while cpdma_ctlr destroy. In this case no need to remember how much channels where created and destroy them by one, as cpdma_ctlr destroys all of them. Signed-off-by:
Ivan Khoronzhuk <ivan.khoronzhuk@linaro.org> Signed-off-by:
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Eric Dumazet authored
At Qdisc creation or change time, prio_tune() creates missing pfifo qdiscs but does not return an error code if one qdisc could not be allocated. Leaving a qdisc in non operational state without telling user anything about this problem is not good. Also, testing if we replace something different than noop_qdisc a second time makes no sense so I removed useless code. Signed-off-by:
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- 12 Jun, 2016 1 commit
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David S. Miller authored
>> net/ipv4/ipconfig.c:130:15: warning: 'ic_addrservaddr' defined but not used [-Wunused-variable] static __be32 ic_addrservaddr = NONE; /* IP Address of the IP addresses'server */ Reported-by:kbuild test robot <fengguang.wu@intel.com> Signed-off-by:
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- 11 Jun, 2016 13 commits
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Manuel Lauss authored
Commit 7f854420 ("phy: Add API for {un}registering an mdio device to a bus.") broke PHY detection on this driver with a copy-paste bug: The code is looking 32 times for a PHY at address 0. Fixes ethernet on AMD DB1100/DB1500/DB1550 boards which have their (autodetected) PHYs at address 31. Cc: Andrew Lunn <andrew@lunn.ch> Signed-off-by:
Manuel Lauss <manuel.lauss@gmail.com> Signed-off-by:
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David S. Miller authored
This reverts commit a2f27217. I applied the wrong version of this. Signed-off-by:
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Manuel Lauss authored
Commit 7f854420 ("phy: Add API for {un}registering an mdio device to a bus.") broke PHY detection on this driver with a copy-paste bug: The code is looking 32 times for a PHY at address 0. Fixes ethernet on AMD DB1100/DB1500/DB1550 boards which have their (autodetected) PHYs at address 31. Cc: Andrew Lunn <andrew@lunn.ch> Signed-off-by:
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David S. Miller authored
John Crispin says: ==================== net: mediatek: various small fixes This series contains various small fixes that we stumbled across while doing thorough testing and code level reviewing of the driver. Changes in V2: * drop the DQL patch from the list until a better solution is found ==================== Signed-off-by: -
John Crispin authored
The code checks if the queue should be stopped because we are below the threshold of free descriptors only to check if it should be started again. If we do end up in a state where we are at the threshold limit, it makes more sense to just stop the queue and wait for the next IRQ to trigger the TX housekeeping again. There is no rush in enqueuing the next packet, it needs to wait for all the others in the queue to be dispatched first anyway. Signed-off-by:
John Crispin <john@phrozen.org> Signed-off-by:
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John Crispin authored
The current code unconditionally wakes up the queue at the end of each tx_poll action. Change the code to only wake up the queues if any of them have actually been stopped before. Signed-off-by:
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John Crispin authored
The TX ring setup has an off by one error causing it to not utilise all descriptors. This has the side effect that we need to reset the next pointer at runtime to make it work. Fix the off by one and remove the code fixing the ring at runtime. Signed-off-by:
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John Crispin authored
During stress testing, after reducing the threshold value, we have seen TX timeouts that were caused by the watchdog_timeo value being too low. Increase the value to 5 * HZ which is a value commonly used by many other drivers. Signed-off-by:
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John Crispin authored
The logic to calculate the threshold value for stopping the TX queue is bad. Currently it will always use 1/2 of the rings size, which is way too much. Set the threshold to MAX_SKB_FRAGS. This makes sure that the queue is stopped when there is not enough room to accept an additional segment. Signed-off-by:
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John Crispin authored
The current code only disables those IRQs that we will later use. To ensure that we have a predefined state, we really want to disable all IRQs. Change the code to disable all IRQs to achieve this. Signed-off-by:
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John Crispin authored
The QDMA engine can fail to update the register pointing to the next TX descriptor if this bit does not get set in the QDMA configuration register. Not setting this bit can result in invalid values inside the TX rings registers which will causes TX stalls. Signed-off-by:
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John Crispin authored
There are two places inside mtk_poll_rx where rx_dropped is not being incremented properly. Fix this by adding the missing code to increment the counter. Signed-off-by:
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John Crispin authored
The lookup of the tx_buffer in the error path inside mtk_tx_map() uses the wrong descriptor pointer. This looks like a copy & paste error. Change the code to use the correct pointer. Signed-off-by:
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